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Head-to-head · Document Comparison Software

Diffchecker vs UltraCompare

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Diffchecker #1 in Document Comparison Software 9.3/10 Free plan · 14-day trial Free planFree trial✓ 0 of 4 features Visit Diffchecker
UltraCompare #3 in Document Comparison Software 9.0/10 Paid ✓ 0 of 4 features Visit UltraCompare

Diffchecker leads on 1 check, UltraCompare on 0, and 0 are even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreDiffchecker · 9.3/10
  • Free planonly Diffchecker
  • Free trialonly Diffchecker

Diffchecker scores higher on our rubric for document comparison software: 9.3 against 9.0 out of 10; our editors rank them #1 and #3.

Diffchecker offers free plan; UltraCompare doesn't.

Diffchecker is the better fit for broad comparison needs on a budget. UltraCompare is the better fit for technical users needing three-way merges.

  • Diffchecker fits best

    Broad comparison needs on a budget

  • UltraCompare fits best

    Technical users needing three-way merges

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Diffchecker 9.3/10 Visit ↗ UltraCompare 9.0/10 Visit ↗
At a glance
Editor score 9.3 9.0
Ranking #1 in Document Comparison Software #3 in Document Comparison Software
Best for Broad comparison needs on a budget Technical users needing three-way merges
Pricing model Free plan + paid Paid
Starting price $15/user/mo $99.95/user/yr
Free plan ✓ (best) —
Free trial 14 days —
Deployment Cloud, Desktop Desktop
Platforms Web, Windows, macOS, Linux Windows, macOS, Linux
Support Tickets Email, Docs
Integrations 3 integrations 7 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Diffchecker 0/4 · UltraCompare 0/4
PDF comparison Not checked yet Not checked yet
Office file comparison Not checked yet Not checked yet
Formatting changes Not checked yet Not checked yet
Redline output Not checked yet Not checked yet
Specs
Deployment Not checked yet Not checked yet
Maximum file size Not checked yet Not checked yet
Our review
Pros
  • Compares text, code, documents, images, spreadsheets, and folders
  • Supports web, Windows, macOS, Linux, Git, and API workflows
  • Pro + Desktop adds offline, batch, merge, and AI summaries
  • Three-way comparison and synchronization for files and folders
  • Git, Subversion, CVS, FTP, SFTP, and command-line support
  • Windows, macOS, and Linux coverage with broad file-format support
Cons
  • Basic limits access to Pro features
  • API Basic is limited to 50 requests per month
  • Merge workflows are two-way rather than three-way
  • No free plan
  • Starts at $99.95 per user per year
  • Sold through UltraEdit bundles rather than a standalone plan
Our verdict

Diffchecker is a comparison tool for developers, legal teams, writers, editors, and operations users. It handles side-by-side and unified text comparisons, word- and character-level change highlighting, source-code syntax highlighting, and…

Read the review →

UltraCompare is a desktop diff, merge, and synchronization application for developers, IT administrators, QA teams, technical writers, and business users. It handles text, folders, binary files, Word documents, PDFs, spreadsheets,…

Read the review →
  1. DiffcheckerDocument Comparison Software 9.3Free plan · 14-day trial
  2. UltraCompareDocument Comparison Software 9.0Paid

Strengths and trade-offs

  • Diffchecker — where it wins

    • Compares text, code, documents, images, spreadsheets, and folders
    • Supports web, Windows, macOS, Linux, Git, and API workflows
    • Pro + Desktop adds offline, batch, merge, and AI summaries

    Where it doesn't

    • Basic limits access to Pro features
    • API Basic is limited to 50 requests per month
    • Merge workflows are two-way rather than three-way

  • UltraCompare — where it wins

    • Three-way comparison and synchronization for files and folders
    • Git, Subversion, CVS, FTP, SFTP, and command-line support
    • Windows, macOS, and Linux coverage with broad file-format support

    Where it doesn't

    • No free plan
    • Starts at $99.95 per user per year
    • Sold through UltraEdit bundles rather than a standalone plan

More comparisons

All document comparison software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update